VOCs (Volatile Organic Chemicals) catalyst taking foam titanium as carrier and preparation method thereof

A titanium foam and catalyst technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, heterogeneous catalyst chemical elements, etc., can solve the problems of easy shedding of active components, complicated preparation process, high processing cost, etc., and achieve the highest shedding rate Low cost, easy access to raw materials, and simple preparation process

Active Publication Date: 2018-05-04
JIANGSU LONGKING COALOGIX CATALYST REGENERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalysts mentioned above all have problems such as complicated preparation process, high processing cost, and easy falling off of active components.

Method used

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  • VOCs (Volatile Organic Chemicals) catalyst taking foam titanium as carrier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A titanium foam is used as a carrier and is used for catalytic oxidation of VOCs, prepared by the following steps:

[0028] 1) With 150mm×150mm and 1mm-thick porous metal titanium foam as the substrate, place it in 0.05mol / l oxalic acid solution for 10min and then place it in 10% dilute sulfuric acid solution for 60min, the reaction temperature is controlled at 70°C, the obtained product was repeatedly washed with deionized water to neutrality, and then dried at 80°C for 4 hours to generate a titanium dioxide precursor on the surface of the titanium foam and in the pores, and the titanium dioxide precursor was metatitanic acid;

[0029] 2) Calcinate the product obtained in step 1) at 400°C for 4 hours to obtain foamed titanium-titanium dioxide, use foamed titanium-titanium dioxide as a carrier, immerse it in 500ml of reaction solution and sonicate for 30 minutes, then put it in a muffle furnace and calcinate at 200°C, keep it warm 3h, obtain the catalyst that is used fo...

Embodiment 2

[0033] A titanium foam is used as a carrier and is used for catalytic oxidation of VOCs, prepared by the following steps:

[0034] 1) With 150mm×150mm and 2mm-thick porous metal titanium foam as the substrate, place it in 0.1mol / l oxalic acid solution for 5 minutes, then place it in 20% dilute sulfuric acid solution for 30 minutes, and control the reaction temperature at 90°C, the obtained product was washed repeatedly with deionized water until it was neutral, and then dried at 100°C for 2 hours to generate a titanium dioxide precursor on the surface of the foamed titanium and in the pores, and the titanium dioxide precursor was metatitanic acid;

[0035] 2) Calcinate the product obtained in step 1) at 600°C for 2 hours to obtain foamed titanium-titanium dioxide, use foamed titanium-titanium dioxide as a carrier, immerse in 500ml of reaction solution and ultrasonically for 60 minutes, then put it in a muffle furnace and calcinate at 300°C, keep it warm 2h, obtain the catalyst...

Embodiment 3

[0039] A titanium foam is used as a carrier and is used for catalytic oxidation of VOCs, prepared by the following steps:

[0040] 1) With porous metal titanium foam of 150mm×150mm and thickness of 2mm as the substrate, place it in 0.08mol / l oxalic acid solution for 8 minutes, then place it in 15% dilute sulfuric acid solution for 45 minutes, and control the reaction temperature at 80°C, the obtained product was repeatedly washed with deionized water until neutral, and then dried at 90°C for 3 hours to generate a titanium dioxide precursor on the surface and pores of the titanium foam, and the titanium dioxide precursor was metatitanic acid;

[0041]2) Calcinate the product obtained in step 1) at 500°C for 3 hours to obtain foamed titanium-titanium dioxide. Use foamed titanium-titanium dioxide as a carrier, immerse in 500ml of reaction solution and sonicate for 45 minutes, and then put it in a muffle furnace for calcination at 250°C. 2.5h, obtain the catalyst that is used for ...

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Abstract

The invention provides a VOCs (Volatile Organic Chemicals) catalyst taking foam titanium as a carrier and a preparation method thereof. The preparation method comprises the following steps: pretreating the foam titanium serving as a substrate to generate a titanium dioxide precursor on the surface and in the pore canal of the foam titanium; then, calcining the titanium dioxide precursor at a hightemperature to obtain foam titanium-titanium dioxide; loading active components, namely, copper oxide and manganese oxide, as well as co-catalysts, namely, neodymium oxide and cobalt oxide through a self-propagating calcining method by taking the foam titanium-titanium dioxide as a carrier to obtain a catalyst to be applied to catalytic oxidation of VOCs. The preparation method has the advantagesof lowering the production cost, increasing the contact area with reactants, increasing the catalytic activity, overcoming the defects of the conventional particle or integral VOCs oxidization catalyst, and facilitating industrial popularization, simple preparation process, adoption of readily-available raw materials, uniform distribution of active components, and low expulsion rate.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a catalyst with titanium foam as a carrier and used for catalytic oxidation of VOCs, and a preparation method of the catalyst. Background technique [0002] With the continuous development of national industrialization, the emission of volatile organic compounds (VOCs) is increasing. VOCs come from a wide range of sources, such as interior decoration, kitchen fume, automobile exhaust, etc.; in industry, they mainly come from waste gas emitted by petrochemical and chemical enterprises. Moreover, the toxicity and carcinogenicity of VOCs endanger human health and can produce photochemical smog. Therefore, how to better purify VOCs is the focus of research in the field of air pollution control. [0003] Catalytic oxidation is currently the most mature VOCs purification technology. Under the action of a catalyst, VOCs are oxidized to carbon dioxide and water by reactin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J35/10B01J37/08B01D53/86B01D53/72
CPCB01D53/8668B01D2257/708B01J23/002B01J23/8892B01J35/10B01J37/08B01J37/088B01J2523/00B01J2523/17B01J2523/3725B01J2523/47B01J2523/72B01J2523/845Y02A50/20
Inventor 张涛唐晓玉丁丽娟何伟
Owner JIANGSU LONGKING COALOGIX CATALYST REGENERATION CO LTD
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